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Monday, 1 February 2016

How To Select Public Address System

Public
address systems include equipment that are used for amplifying the
volume of speech so that large number of people can hear the voice.
These equipment are mainly used for addressing public with relevant
information. Special events like conferences, stage shows, meetings and
weddings where a huge crowd need to address, a PA system is preferred.

Public Address System

Setting
up of Public Address Systems depend on various factors. Some are,
number of people to address, time of an event along with type, area and
location of venue. This task can be little daunting for people who are
setting up PA system for the first time. Number of questions emerged in
their minds while selecting PA systems. Some are,

What all equipment do I need?

How many loudspeakers do I need?

Number & types of sound sources required?

How much power will they consume?

To
provide assistant, we have gathered information below as a short
tutorial. In which, we have explained the basic components of PA system
along with their purpose. A Public address system has three components –
a pickup device like a microphone, an amplifier and a loudspeaker.

Sound Sources – Various
types of sound sources are used as a pick-up device to convert sound
waves into an electronic signal. The microphones are the most widely
used sound source, which further comes in various specifications. There
are wired and wireless microphones as well as pendent type and handheld
microphones. Microphones come handy while addressing public in a stage
shows, meetings and conferences.

Sound Sources

In
addition, recorded media like CD, Minidisc and Cassettes are also used
as a sound sources in events. Such sound sources are used in weddings,
stage shows, music events and rallies for playing music and prerecorded
voice.

Amplifiers – The
voice signal produce by above mention sound sources generally have weak
frequency and need to be amplified so that it can be powered by
loudspeakers. Various specifications of amplifiers are used for taking
line-level signal and bosting it to drive a loudspeaker.

Amplifier

Loudspeakers – The
amplified signal is finally converted into sound waves using
loudspeakers in order to broadcast message to the public. A loudspeaker
is a cabinet which contains one or more drivers that produce and deliver
delivers clear and precise sound.

Loudspeakers

The
public address system manufacturers has presented many configurations
of PA systems to ensure proper management and power requirements. The
purpose of public address system drive its requirements such as power
requirement for addressing large audience or at noisy environment would
be more. One should make purchase decision after considering the
environment and number of audience.

PA Systems

In
some cases, events management demands visually pleasing PA system to
make the environment pleasing and interesting. Flashlights, LEDs or
other display units are installed in order to create more impact in the
minds of audience. Hence, it is necessary to consider the price factor
and potential for expanding PA system in future before making a purchase
decision.